I need to delete a package and free all resources bound to it. How can that be achieved?

I can create a new package by simply placing variables in it: 

$X::Y::a=1;
sub X::Y::f {}

[download]
creates a package with 2 elements. But: 
delete $X::{"Y::"};

[download]
does not show the desired effect.

In reply to How to delete a package by tfoertsch

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